Karin Bergquist is an American singer-songwriter and musician, best known as the vocalist and co-founder of the band Over the Rhine, which she formed in 1989 with her husband, Linford Detweiler. Her career is inextricably linked to the band's, for which she serves as a lyricist and the lead vocalist. Her voice, characterized by a deep, versatile, and soulful timbre, is considered the signature element of the group's sound, which spans Americana, folk, and indie rock. She has contributed to critically acclaimed albums such as *Good Dog Bad Dog* (1996), the double concept album *Ohio* (2003)—considered one of their most significant works—and *The Long Surrender* (2011), produced by Joe Henry. Despite operating outside of mainstream commercial channels, Bergquist's work has garnered a solid cult following and deep respect within the singer-songwriter landscape, thanks to the literary quality of her lyrics, the emotional depth of her performances, and the artistic consistency she has demonstrated over more than three decades.